Summarize&colon; ISO W-Z Series RTD Thermal Resistanct to DC Current&sol;Voltage Transmitter is a kind of mixed integrate circuits which integrates a set of isolated DC&sol;DC converters&comma; linearization disposal and long line compensation circuit&comma; can bring two group of each other isolated power to input port for magnifying circuit&comma; modulating circuit powered and output port demodulation&period; They can meet industrial wide temperature&comma; humidity&comma; shaky poor operation condition&period; ISO W-Z Series temperatures signal isolation amplifier is very convenient&comma; with minimal external components&comma; can be realized Pt100 RTD signal isolation transmitter&period; And can achieve the industrial site temperature control signal into two&comma; into four functions&period;